/usr/share/doc/dfu-util/README

Dfu-util - Device Firmware Upgrade Utilities
Dfu-util is the host side implementation of the DFU 1.0 [1] specification of
the USB forum.
DFU is intended to download and upload firmware to devices connected over
USB. It ranges from small devices like micro-controller boards up to mobile
phones. With dfu-util you are able to download firmware to your device or
upload firmware from it.
Most tests
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